Right To Left SnackBar

you have to set this based on Local. Android supports this feature.

From Android API Level 17+ it supports RTL natively. To force your entire layout to be RTL including the ActionBar do the following.

In Android manifest under the application tag keep this

android:supportsRtl="true"

defince a method like this in Utils class

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static void getRtlSupport() {
    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1){
getWindow().getDecorView().setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
    }  
} 

Use this repo as reference and implement this for snackbar

https://github.com/semsamot/ActionBarRTLizer.git

just add this codes :

In Android manifest under the application tag keep this

android:supportsRtl="true"

and this :

Snackbar snackbar = Snackbar.make(getView(), "Text", Snackbar.LENGTH_SHORT);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
    TextView view1 = (TextView)snackbar.getView().findViewById(android.support.design.R.id.snackbar_text);
    view1.setLayoutDirection(View.LAYOUT_DIRECTION_RTL);
}

snackbar.show();

I solved this problem by set custom layout for snack layout according to this refrence.

customize snackBar's layout

Finally from the answers and more searches i found this solution:

Snackbar snackbar =
    Snackbar.make(view, "My right2left text", Snackbar.LENGTH_LONG)
            .setAction("Action", new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                }
             });

Set direction to Right-to-Left:

ViewCompat.setLayoutDirection(snackbar.getView(),ViewCompat.LAYOUT_DIRECTION_RTL);

Don't forget this for showing the snackbar:

snackbar.show();

---

UPDATE

Since you have Text and Action as TextView you can use the other TextView methods for them. like as setTypeface(), setTextSize() and so on.

Set typeface for text:

TextView text = snackbar.getView().findViewById(android.support.design.R.id.snackbar_text);
text.setTypeface(yourTypeface);

Set typeface for action:

TextView action = snackbar.getView().findViewById(android.support.design.R.id.snackbar_action);
action.setTypeface(yourTypeface);